// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_
#define CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_

#include <stddef.h>
#include <stdint.h>

#include "base/compiler_specific.h"
#include "base/threading/thread_local_storage.h"
#include "base/timer/timer.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "components/webcrypto/webcrypto_impl.h"
#include "content/child/webfallbackthemeengine_impl.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/public/platform/Platform.h"
#include "third_party/WebKit/public/platform/WebGestureDevice.h"
#include "third_party/WebKit/public/platform/WebURLError.h"
#include "third_party/WebKit/public/public_features.h"
#include "ui/base/layout.h"

#if BUILDFLAG(USE_DEFAULT_RENDER_THEME)
#include "content/child/webthemeengine_impl_default.h"
#elif defined(OS_WIN)
#include "content/child/webthemeengine_impl_win.h"
#elif defined(OS_MACOSX)
#include "content/child/webthemeengine_impl_mac.h"
#elif defined(OS_ANDROID)
#include "content/child/webthemeengine_impl_android.h"
#endif

namespace base {
class WaitableEvent;
}

namespace blink {
namespace scheduler {
    class WebThreadBase;
}
}

namespace content {

class NotificationDispatcher;
class PushDispatcher;
class ThreadSafeSender;
class WebCryptoImpl;

class CONTENT_EXPORT BlinkPlatformImpl
    : NON_EXPORTED_BASE(public blink::Platform) {
public:
    BlinkPlatformImpl();
    explicit BlinkPlatformImpl(
        scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner);
    ~BlinkPlatformImpl() override;

    // Platform methods (partial implementation):
    blink::WebThemeEngine* themeEngine() override;
    blink::WebFallbackThemeEngine* fallbackThemeEngine() override;
    blink::Platform::FileHandle databaseOpenFile(
        const blink::WebString& vfs_file_name,
        int desired_flags) override;
    int databaseDeleteFile(const blink::WebString& vfs_file_name,
        bool sync_dir) override;
    long databaseGetFileAttributes(
        const blink::WebString& vfs_file_name) override;
    long long databaseGetFileSize(const blink::WebString& vfs_file_name) override;
    long long databaseGetSpaceAvailableForOrigin(
        const blink::WebSecurityOrigin& origin) override;
    bool databaseSetFileSize(const blink::WebString& vfs_file_name,
        long long size) override;
    size_t actualMemoryUsageMB() override;
    size_t numberOfProcessors() override;

    void bindServiceConnector(
        mojo::ScopedMessagePipeHandle remote_handle) override;

    size_t maxDecodedImageBytes() override;
    uint32_t getUniqueIdForProcess() override;
    blink::WebString userAgent() override;
    blink::WebURLError cancelledError(const blink::WebURL& url) const override;
    blink::WebThread* createThread(const char* name) override;
    blink::WebThread* currentThread() override;
    void recordAction(const blink::UserMetricsAction&) override;

    blink::WebData loadResource(const char* name) override;
    blink::WebString queryLocalizedString(
        blink::WebLocalizedString::Name name) override;
    virtual blink::WebString queryLocalizedString(
        blink::WebLocalizedString::Name name,
        int numeric_value);
    blink::WebString queryLocalizedString(blink::WebLocalizedString::Name name,
        const blink::WebString& value) override;
    blink::WebString queryLocalizedString(
        blink::WebLocalizedString::Name name,
        const blink::WebString& value1,
        const blink::WebString& value2) override;
    void suddenTerminationChanged(bool enabled) override { }
    blink::WebThread* compositorThread() const override;
    blink::WebGestureCurve* createFlingAnimationCurve(
        blink::WebGestureDevice device_source,
        const blink::WebFloatPoint& velocity,
        const blink::WebSize& cumulative_scroll) override;
    void didStartWorkerThread() override;
    void willStopWorkerThread() override;
    bool allowScriptExtensionForServiceWorker(
        const blink::WebURL& script_url) override;
    blink::WebCrypto* crypto() override;
    blink::WebNotificationManager* notificationManager() override;
    blink::WebPushProvider* pushProvider() override;

    blink::WebString domCodeStringFromEnum(int dom_code) override;
    int domEnumFromCodeString(const blink::WebString& codeString) override;
    blink::WebString domKeyStringFromEnum(int dom_key) override;
    int domKeyEnumFromString(const blink::WebString& key_string) override;

    // This class does *not* own the compositor thread. It is the responsibility
    // of the caller to ensure that the compositor thread is cleared before it is
    // destructed.
    void SetCompositorThread(blink::scheduler::WebThreadBase* compositor_thread);

private:
    void InternalInit();
    void WaitUntilWebThreadTLSUpdate(blink::scheduler::WebThreadBase* thread);
    void UpdateWebThreadTLS(blink::WebThread* thread, base::WaitableEvent* event);

    bool IsMainThread() const;

    scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
    WebThemeEngineImpl native_theme_engine_;
    WebFallbackThemeEngineImpl fallback_theme_engine_;
    base::ThreadLocalStorage::Slot current_thread_slot_;
    webcrypto::WebCryptoImpl web_crypto_;

    scoped_refptr<ThreadSafeSender> thread_safe_sender_;
    scoped_refptr<NotificationDispatcher> notification_dispatcher_;
    scoped_refptr<PushDispatcher> push_dispatcher_;

    blink::scheduler::WebThreadBase* compositor_thread_;
};

} // namespace content

#endif // CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_
